“…A set of intervention studies conducted in French immersion classrooms ranging from 1st to 8th grade demonstrated the variable effects of form-focused instruction on a range of challenging target features in French: grammatical gender (Harley, 1998;Lyster, 2004), second-person pronouns (Lyster, 1994), conditional verb forms (Day & Shapson, 2001), functional distinctions between perfect and imperfect past tenses (Harley, 1989), verbs of motion (Wright, 1996), and derivational morphology (Lyster, Quiroga, & Ballinger, 2013). The instructional treatments in these intervention studies generally proved effective at improving target language accuracy, but especially so in cases where the activities differed from other activities more typical of content-based instruction.…”